Title:
SYSTEM FOR MONITORING AN OCCUPANT OF A MOTOR VEHICLE
Document Type and Number:
WIPO Patent Application WO/2022/200102
Kind Code:
A1
Abstract:
The invention relates to a monitoring system (1) comprising: - a light source (3), - an image acquisition device (5) comprising a shutter (11) which allows light to pass through during a period (PI) when the source is active and during a period (P2) when the source is inactive, the light received by a sensor (9) comprising a component (Ca) due to the ambient lighting and a component (Ci) due to the light source; - a processing unit (7) configured to determine a physiological parameter of the occupant using photoplethysmography. The shutter (11) allows light to pass through during a third period (P3), said light comprising the ambient lighting component (Ca), and the processing unit (7) being configured to remove said component (Ca) from the light received (9) during the two other periods in order to isolate the source component (Ci) on acquired images.
Inventors:
RINGELSTEIN NICOLAS (FR)
AUTRAN FREDERIC (FR)
AUTRAN FREDERIC (FR)
Application Number:
PCT/EP2022/056533
Publication Date:
September 29, 2022
Filing Date:
March 14, 2022
Export Citation:
Assignee:
VALEO COMFORT & DRIVING ASSISTANCE (FR)
International Classes:
A61B5/024; A61B5/00; A61B5/08
Foreign References:
| US20200297270A1 | 2020-09-24 | |||
| US20180191936A1 | 2018-07-05 |
Other References:
GONZALEZ-BANOS H ET AL: "Computing depth under ambient illumination using multi-shuttered light", PROCEEDINGS OF THE 2004 IEEE COMPUTER SOCIETY CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION 27 JUNE-2 JULY 2004 WASHINGTON, DC, USA, IEEE, PROCEEDINGS OF THE 2004 IEEE COMPUTER SOCIETY CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION IEE, vol. 2, 27 June 2004 (2004-06-27), pages 234 - 241, XP010708658, ISBN: 978-0-7695-2158-9, DOI: 10.1109/CVPR.2004.1315169
Attorney, Agent or Firm:
DELPLANQUE, Arnaud (FR)
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